| * SPI (Serial Peripheral Interface) |
| |
| Required properties: |
| - cell-index : SPI controller index. |
| - compatible : should be "fsl,spi". |
| - mode : the SPI operation mode, it can be "cpu" or "cpu-qe". |
| - reg : Offset and length of the register set for the device |
| - interrupts : <a b> where a is the interrupt number and b is a |
| field that represents an encoding of the sense and level |
| information for the interrupt. This should be encoded based on |
| the information in section 2) depending on the type of interrupt |
| controller you have. |
| - interrupt-parent : the phandle for the interrupt controller that |
| services interrupts for this device. |
| |
| Optional properties: |
| - gpios : specifies the gpio pins to be used for chipselects. |
| The gpios will be referred to as reg = <index> in the SPI child nodes. |
| If unspecified, a single SPI device without a chip select can be used. |
| |
| Example: |
| spi@4c0 { |
| cell-index = <0>; |
| compatible = "fsl,spi"; |
| reg = <4c0 40>; |
| interrupts = <82 0>; |
| interrupt-parent = <700>; |
| mode = "cpu"; |
| gpios = <&gpio 18 1 // device reg=<0> |
| &gpio 19 1>; // device reg=<1> |
| }; |